'Were assembled' in the Bible

Then all the Midianites, and the Amalekites, and the children of the east were assembled, and went over, and encamped in the valley of Jezreel.

And it was told to Abimelech, that all the men of the tower of Shechem were assembled.

Then the children of Ammon were assembled, and encamped in Gilead. And the children of Israel assembled themselves, and encamped in Mizpeh.